Pump or the like



PUMP OR THE LIKE Filed Nov. 11, 1935 I INVENTOR Q d6 BY Z ATTORNEY Patented May 12, 1936 UNITED STATES PATENT OFFICE 'IClaims.

This invention relates to an improved mechanical movement particularly adapted for use in pumps, compressors and engines of similar nature.

The invention is designed to provide a pump or the like which will deliver a maximum amount of fluid for the size of pump with a minimum amount I of wear. The pump is designed to be compact and also positive in its operation and one in which any repair necessary can be easily made.

' The invention also lends itself to an adjustment to regulate the capacity of the pump at a given speed and also to regulate the direction of flow whereby the flow through the pump can be reversed. l V

v The invention is illustrated in the accompanying drawing, in which Figure 1 is an end view of a pump embodying by invention and showing one half the cap removed to expose the rotor.

' Figure 2 is a section on line 22 in Figure 1 with the upper and lower parts in elevation and the rotor and its control pin in elevation. Figure 3 is a section of the left hand portion of Figure 2 with a modification to show one means of readily v 25 adjusting the control pin to vary the capacity and/or the direction of flow in the pump. Figure 4 is a perspective view of the operating parts of pump partly separated. Figure 5 is a side 'view of the control pin and Figure 6 is an edge 30 view of the control pin. Figure 7 is a diagrammatic end view of the end of the cap showing the various positions of the control pin to produce various results in capacity and direction of 35 The device comprises a suitable casing Ill having a main bearing II in which is arranged a sleeve l2. The sleeve has a flange l3 resting against a shoulder M in the casing. The sleeve receives a shaft I5 which has an end l6 extending 40 from the casing. This end isfor the attachment of a gear or pulley for driving the shaft or it can be directly connected with the shaft of a suitable motor; A liquid, gas, or oil Seal ll of suitable construction is placed in the casing toprevent 45 leakage.

' 55 with the casing III. In the spherical chamber is a rotor 22 which is of segmental form of a size less than a hemisphere and with its rounded face 23 fitting the curved wall of the chamber l8 and having two flat faces 24 and 25 which converge toward the centre and are opposed to the plate l 8. The rotor 22 and the plate -I 8 rotate together and are connected by a. means that permits the rotor to rock on the plate l8. The rotor 22 and the plate I8 rotate together and are connected by a means that permits the rotor to. rock on the plate and which also takes up the larger part of the strain that tends to separate them in a longitudinal direction. The reason for thiswill be described hereinafter.

The means, shown comprises a sealing member 26 which is secured across the narrow end of the rotor and exposes more than half of its cylindrical surface. The plate l8 has a groove 21 with undercut edges, 28 forming more than half a cylinder in cross-sectional shape. The sealing member 26 fits in the groove 21 and can not be separated therefrom in a direction longitudinal relative to the shaft I5. The sealing member is preferably made in a separate cylindrical piece partly set into the rotor and fastened by screws 29 to the rotor 0n the curved face 23 of the rotor 22 is a slot 30 extending nearly from side to side and parallel with the sealing strip 26. This slot receives the rectangular end 3| of a pin-32 rotatably ar- 30 ranged in the cap but fixed in the cap against any movement other than rotation. This pin 32 is at an angle to the axis of the shaft l5 and plate Ill. The form shown includes a screw 33 fitting at its inner reduced end in the peripheral groove 35 34 in the pin 32. The pin 32 has the part 3! which fits into the slot 30 extended into a slot in the sealing member 26 and the sealing member and the rotor have a limited rocking motion on the part 3|. The part 3! of the pin is preferably secured on a pin 31' which is fastened in the sealing member and passes through a hole 3|- in the end 3| of the pin 32.

The control pin 32 with its end 3| in the slot 30 allows the rotor to rotate with the plate l8 but to-be held central on the pin 32. This causes the .faces 24 and 25 of the rotor to alternatelyapthe plate l8 and the face 24 of the rotor will be faces 24 and 25 will be both equi-distant from the plate l8 and at an angle thereto.

The casing has an inlet port as and an outlet" port 36. The latter may be supplied with a conventional form of air chamber 31, if desired. The inlet port has its inner end 38 opening into the port 39 of .the flange l3. The exhaust port has its inner end 40 opening into the exhaust port 4| of the flange |3 The flange l3 does not rotate and is shown as a bearing element for the plate l8 but the flange I3 can be made integralwith the casing and the ports 39 and 4| cast directly in'the casing III.

The plate I 8 rotates across the face of the flange l3 and has two ports 42 and 43 which extend from front to back and communicate alternately between the chamber l9 and the ports 39 and 4|.

The operation of the device is as follows. As suming the parts to be starting from the position shown in Figuresl and 2 the ports 42 and 43 are passing across the spaces 44 on the flange I3 and as'they leave the space the rotation of the parts brings port 42 in communication with port 39 of the flange l3 and thus with the inlet port 35. The face 24 of the rotor 22 as the rotor rotates with the plate I 8 begins to yawn and retreats from the plate l8 thus causing a suction which draws in fluid. When the rotor arrives at its maximum opening after completing a half revolution the port 42 passes across the lower space 44 of the flange and is cut oil from the inlet port 39.

It, then passes into communication with the outlet port 4| and rotating with the plate i8 and on the pin 32 begins to close the face 24 toward the plate It and forces the fluid previously taken in to pass out through the port 4| into the outlet port 36 and this continues until all the fluid is expelled and port 42 againreaches upper space 44 where it is shut off from the outlet. While one face is drawing in fluid the other is expelling fluid and vice versa. This operation of the rotor is due to its rotation with the plate and its control pin to be positioned above the axis of rotation of the shaft. To. reverse this operation and reverse the flow of fluid through the pump the control pin is shifted to a point diametrically ment is made in this way when changes are m frequent.

For ready adjustment I show a construction in Figure 3 which illustrates the control pin rotatable circumferentially in its relation to the axis of ro-' tation of the shaft l and the plate la. Thecontrol pin is secured in a bushing 45 rotatable in the cap 20' and having a projecting stud 43 on which a handle 41 is secured. The construction is one form of ready adjustment of the position of the control pin relative .to theports 39 and 4|. By moving the handle 41 to turn the bushing 45 the pump can be regulated to vary its capacity, to

reverse the flow or to be inactive except for an 1 2,040,178 open at the lower part of the chamber.' When internal surging, all this without varying the speed of the pump" The modification in Figure 3 also shows a construction having the pin 3| made rectangular but extending only into the rotor and short of the sealingme'mber 25.

This description of the pump is predicated on a fixed casing and a rotatable shaft but it will be evident that a rotatable casing and a fixed shaft willbring aboutthe same result as the mechanical movement which is the gist of this invention remains the same.

Various changes can=be made in the form and i proportion of the parts without departing from the scope of my invention.

I claim: W

1. A mechanical movement for pumps, compressors and the like comprising a casing havipg a substantially semi-spherical chamber, a revolvable plate forming the flat side of the chamber, a sleeve in the casing, a flange on the sleeve against which the rear face of the plate rotates, the flange having curved ports and the plate having ports to pass across the ports of the flange, the casing having ports leading to the curved ports .of 'thejflangei a segmental shaped rotor occupying a major portion of the chamber and bearing on the curved wall thereof, a sealing member secured to the rotor, the plate having a diametrically arranged slot to receive the member whereby the rotor can rock.

2. A pump or the like comprising a casing having a substantially semi-spherical chamber therein, a rotatable plate forming the flat. wall of the chamber, the plate having a diametrically arranged slot with curved walls and with overhanging edges, the segmental rotor fltting the curved wall of the chamber and having a sealing member seated to rock in the slot of the plate and holding the rotor and plate against separation-whereby the wear is minimized on the curved surface of the rotor, the casing and the plate having inlet and exhaust ports the rotor having a slot on its curved face and parallel with the sealing member, a rotatable pin in the casing, said pin being seated in the slot in the rotor, said pin rotating on an axis inclined to the axis of rotation of the plate. a

3. A pump or the like comprising a casing having a substantially semi-spherical chamber therein, a rotatable plate forming the flat wall of the chamber, the plate having a diametrically arranged slot with curved walls and with overhanging edges, a segmental rotor fitting the curved wall of the chamber and having a sealing member seated to rock in the slot of the plate and holding the rotor and plate against separation whereby the wear is minimized on the curved surface of the rotor, the casing and the plate having inlet and exhaust ports, the rotor having a slot on its curved face and parallel with the sealing member, a rotatable pin in the casing, said pin being seated in the slot in the rotor, said pin rotating on an axis inclined to the axis of rotation of the plate and means for shifting said pin circumferentially relative to the axis of rotation of the plate.

4. A pump or the like comprising a casing having a substantially semi-spherical chamber therein, a rotatable plate forming a flat wall across the diameter of the chanrber, the plate having a diametrically disposed recess, a sealing strip fitting in the recess .and held agains movement laterally of the strip, a rotor secured to the seaing strip, said rotor being segmental in shape and having flat faces opposite the plate, a rotatable pin extending from the curved wall of the casing and inclined relative to the axisof rotation of the plate,"sai d pin having a rectangular portion extending through therotor and into the sealing strip, said rotor and sealing strips having slots to receive the pin and to allow a limited rocking movement of the rotor and strip.

5. A pumfi or the like comprising a'casing hav-' ing a substantially semi-spherical chamber therein, a rotatable plate forming a flat wall'across the diameter of the chamber, the plate having a diametrically disposed recess, a sealing strip fitting in the recess and held against movement laterally of the strip, a rotor secured to the sealing strip, said rotor being segmental in shape and having flat faces opposite the plate, arotatable to receive the pin and to allow a limited rocking pressors and the like comprising a casing having a substantially semi-spherical'chamber, a rotatable plate forming the flat side of the chamber, a rotor of segmental shapeoccupying a major portion of the chamber, means for sealing the diametrical juncture of the flat faces of the rotor and of the plate, the rotor having a slot in the curved face and parallel with the sealing means, and a pin projecting from the curved wall of the casing and extending into theslot, said pin being mounted so as to oscillate on an axis radial to the center of the plate. E

7. A- mechanical movement for pumps, compressors and the like comprising a casing having a substantially semispherical chamber, a rotatable plate forming the flat side of the chamber, a rotor of segmental shape occupying a ing the diametrical juncture of the flat faces with the sealing means, and a pin projecting from the curved wall of the casing and extending into the slot, said pin extending into the sealing means, the sealing means being slotted to receive the pin, and means for securing the end of the pin to the sealing means.

JAMES L. ORNE.

.major portion of the chamber, means for seal- 

